package com.cuit.dao.impl;


import com.cuit.util.JdbcUtils;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanHandler;
import org.apache.commons.dbutils.handlers.BeanListHandler;
import org.apache.commons.dbutils.handlers.ScalarHandler;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.List;

public abstract class BaseDao {

    private QueryRunner queryRunner = new QueryRunner();

    public int update(String sql, Object... args) {
        Connection connection = JdbcUtils.getConnection();
        try {
            return queryRunner.update(connection, sql, args);
        } catch (SQLException throwables) {
            throwables.printStackTrace();
            throw new RuntimeException(throwables);
        }

    }


    public <T> T queryForOne(Class<T> type, String sql, Object... args) {
        Connection con = JdbcUtils.getConnection();
        try {
            return queryRunner.query(con, sql, new BeanHandler<T>(type), args);
        } catch (SQLException throwables) {
            throwables.printStackTrace();
            throw new RuntimeException(throwables);
        }
    }

    public <T> List<T> queryForList(Class<T> type, String sql, Object... args) {
        Connection con = JdbcUtils.getConnection();
        try {
            return queryRunner.query(con, sql, new BeanListHandler<T>(type), args);
        } catch (SQLException throwables) {
            throwables.printStackTrace();
            throw new RuntimeException(throwables);
        }
    }


    public Object queryForSingleValue( String sql, Object... args)
    {
        Connection conn=JdbcUtils.getConnection();
        try {
            return queryRunner.query(conn,sql,new ScalarHandler(),args);
        } catch (SQLException throwables) {
            throwables.printStackTrace();
            throw new RuntimeException(throwables);
        }
    }
}
